Cisco 3631 Guia de Instalação descarregar pdf (Página 26)

Upgrading System Memory in Cisco 3600 Series Routers

78-3636-05

Replacing Cisco Flash Memory SIMMs

Installing SDRAM DIMMs

Follow these steps to install SDRAM DIMMs:

Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the

equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the

connectors.

Step 2 On the mainboard, locate the SDRAM DIMM sockets. (See Figure 10 or Figure 11.)

Caution Handle the DIMM by the nonconnector edges only; do not press on the center. Handle carefully. DIMMs

are ESD-sensitive components and can be damaged by mishandling.

Step 3 Hold the DIMM as follows:

• Cisco 3631: With the polarization notch on the left, near the left of the chassis, and with the

connector edge at the bottom.

• Cisco 3660: With the polarization notch on the right, near the rear of the chassis, and with the

connector edge at the bottom.

Step 4 Beginning with socket 0, insert the DIMM by sliding the end with the metal fingers into the socket at

approximately a 90-degree angle to the motherboard. Gently push into place until the socket guideposts

fit through the alignment holes and the latches on both sides snap into place. (See Figure 14.)

Caution It is normal to feel some resistance when installing a DIMM, but do not use excessive force on the

DIMM, and do not touch the surface components.

Step 5 Ensure that each DIMM is straight (perpendicular to the socket).

Step 6 If necessary, repeat Step 3 through Step 5 to install a second DIMM.

Step 7 When you finish replacing DIMMs and installing all internal components, proceed to the “Replacing

the Mainboard Tray (Cisco 3660)” section on page 35.

Replacing Cisco Flash Memory SIMMs

Cisco Flash memory SIMMs are manufactured with a polarization notch to ensure proper orientation,

and alignment holes to ensure proper positioning. (See Figure 7.) Cisco Flash memory SIMMs are

installed with the connector edge down and the polarization notch near the front of the chassis.

Caution To avoid damaging ESD-sensitive components, observe all ESD precautions. To avoid damaging the

underlying mainboard, do not use excessive force when you remove or replace SIMMs.

Figure 15 through Figure 17 show the location of the Cisco Flash memory SIMMs on your router’s

mainboard.

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Cisco 3631 Guia de Instalação Página 26